Detachable wheel rim



Sepi. l, 1925..

Z. LITTMAN 4 mmmansxusn an Filed July 16. 1924 2 Sheen-Shoat 1 Patented Sept. 1, 1925.

, UNITED STATES ZENQ LIT'IMAN, F YORK, N. Y.

PATENT OFFICE,

! DETAC'HABLE WHEEL: Rm.

.Applicatign filed Ju'1y16, 1924. Serial No. 726,259.

This invention relates to tire-supporting rims for vehicle wheels, and v more'particw larly to demountable rims of the sectional p :form of locking means, with the parts in locked position;

type.

Broadly, the object of the invention is to provide a demountable rim of the; general' type referred to which can be readily manipulated in a tire-changing operation, and which embod es a simplified construction v with a minimum number of operating parts. The invention consists of a two-part rim supporting 1 members having their edges formed for interlocking engagement, lock-' ing means being provided for positively locking the tire-supporting members in interlocked engagement, or forreleasing the parts to permit separation thereof in a tirechanging operation.

Preferably theinner edges of the tire-supporting members have 1 complementary tongued-and grooved meeting faces which provide a fitted and rigid construction when the parts are in assembled relation. In ad dition, couplingdnembers extend from the edge of one of the tiresupporting members into correspondingly formed recesses in the edge of the other member, means being provided for locking the tongues against removal from the recesses.

Other features of the invention will be hereinafter referred to. i In thedrawings, v

Figurel is a sectional view showing a portion of a demountable rim embodying the invention, with a tire supported thereon;

a recessed portion of one of the sections of the demountable rim shownin Figure 1 Figure 3 is a view similar to Figure 2, showing a portion of the othertire-supportingtherefrom; V Figure 4 is a plan view showing a portion of the assembled rim with'th'e parts in locked position; r

Figure 5 is a view showing an unlocked member made up of a. pair of annular tiretheir inner edges.

Figure 2 is a View in perspective, showing ing section witha'coupling member extendand disassembled relation of the parts shown I in Figure 4; V

' Figure 6 isa sectional view on an enlarged scale showing a locked position of the parts asin Figure 4-;

Figure 7' is a view similar to Figure6 showing an unlocked position of the parts;

Figure 8 is a perspective view showing a preferred form of locking means forming part of the invention;

Figure 9 is a detail view of a modified parts tailed description of the invention, a demountable rim is shown in Figure 1, made up of two complementary annular tire-supporting sections 10 and 11 supporting the tire 12. The rim sections 10 and ,11 are formed along their inner edges for a tongueand-groove interlock, the grooves being indicated at 13' in the rim section10,,and the tongue at 14in the rim section 11. This formation of the inner edges of the rim sec tions 10 and 11 provides a tongue-and-groove joint such as is indicated at 15 in Figures 1 and 4 of the drawing, when the rim sections are brought into a contacting relation as to In order to lock the rim sections 10 and 11in the Figure 4 relation,one of the members, as 11, is provided with laterally extending coupling members 16, adapted 'to enter corresponding recesses 17 formed in the other rim section or tire-supporting member 10. 'It will be seen that the cou-' pling members 16 extend laterally-in the body of the rim'section 11, so that when the parts are united as shown in Figure 1 of the drawing, there is only a single thickness of I material in the complete rim I In order to lock the coupling members 16 within the recesses 17 and thereby securely hold the two rim sections 10 and 11 together, 1 I

a locking member 18 is provided which, in

a preferred form of the invention, is retatably journaled in a circular seat 19 formed in the rim section 10 in overlapping relation with the coupling-member-receiving recess 17. The locking member 18 is provided with a fiat side forming a cord to the circle, as at 20, so that when the parts are in the Figure 5 position the movement of the coupling member 16 into or out of the recess 17 may take place. The coupling member 16 is provided in one edge thereof with a notch 21, adapted to receive any arcuate edge portion of the locking member 18 when the locking member is rotated in its seat 19 as by the application of a key to the recess 22 (Figure l).

When the rim sections 10 and 11 are brought together, so that their edges form the tongued-anclgrooved joint 15 referred to, and with the coupling members 16 fitting within the recesses 17, the locking members 18 can be rotated to positively lock he coupling members 16 in place in the recesses, and thereby. hold the rim sections securely together. The provision of the keyreceiving recess 22 in the locking member 18 permits the operation of the locking device from the inner periphery of the rim, as will be apparent from Figures 1, 6 and 7 of the drawing.

Other forms of locking means may be provided, and in Figures 9 and 10 of the drawing one of these modified forms is shown. The modification consists of a sliding lock member 23, mova le back and forth in an elongated slot 24 in the rim section 10, into and out of a suitably formed locking recess formed in the coupling member 16.

In Figures 11 and 12 of the drawing still another form of locking means is shown, comprising a locking member 26 formed of a section of spring metal attached to the rim section 10 as at 27, and arranged to enter a recess 28 in the coupling member 16 by way of a cut-away portion 29 in the rim section 10. The spring locking member 26 can be readily moved from its locked posi tion shown in full lines in Figures 11 and 12 of the drawing to the dotted line position shown in Figure 12, in order to unlock the parts and permit the withdrawal of the coupling member 16 from the recess 17.

In order to produce a still more rigid relationship of the parts when they are interengaged, the edge of the coupling memhere 16 and of the recesses 17 exihbit a tongueand-groove construction, similar to that shown at 13 and 14; on the edges of the rim sections 10 and 11. In this case the tongue 30 on the coupling members 16 enters the groove 31 in the recess 17. And of course the. edge of locking member 18 (of locking slide 22 may be grooved to correspond with the tongue with which it cooperates.

I claim:

1. In a demountable rim for vehicle wheels, a pair of complementary annular tire-supporting members having their inner edges formed with a tongue-and-groove construction, and means including tongued and grooved members for holding the tonguedand-groovededges in interengaging relation.

2. In a demountablerim for vehicle wheels, a pair of complementary annular tire-supporting members, coupling members extending laterally from the inner edge of one of the tire-supporting members, the other tire-supporting member being provided with recesses to receive the coupling members in a tongued and grooved relation, and means for locking the coupling members in the recesses.

3*. In a demountable rim for vehicle wheels, a pair of complementary annular tire-supporting members, coupling members extending laterally from the inner edge of one of the tire-supporting members, the other tire-supporting member being provided with recesses to receive the coupling members in a tongued and grooved relation, and locking members mounted on the last-named tire-supporting member adjacent to the recesses and engageable with the coupling members to lock the tire-supporting memhere together.

4. In a demountable rim for vehicle wheels, a pair of complementary annular tire-supporting members, having their inner edges tongued and grooved to form a tongue and-groove joint when interengaged, one of the tire-supporting members being provided with coupling members extending from its inner edge, and the other tire-supporting member being provided with recesses to receive the coupling members in a tongued and grooved relation, and means for locking the coupling members in place in the recesses to hold the tire-supporting members together.

5. In a demountable rim for vehicle wheels, a pair of complementary annular tire-supporting members having their inner edges tongued and grooved to form a tongueand-groove joint when interengaged, one of the tire supporting members being provided with coupling members extending from its inner edge and the other tire-supporting member being provided with recesses to receive the coupling members, the interengaging edges of the coupling members and the recesses being tongued andgrooved, said coupling members being provided with a locking notch in a side edge thereof, and locking means carried by the recessed tire-supporting member and engageable with the notches in the coupling members to lock the parts together.

6. In a demountable rim for vehicle wheels, a pair of complementary annular tire-supporting members, one of the tiresupporting members being provided with coupling members extending laterally from an edge thereof, and the other tire-supporting member being provided with recesses formed to receive the coupling members,

said coupling members being provided with a notch in a side edge thereof, respectively, and rotatable locking members journaled 1n a normally covered position the last-named tire-supporting member adjacent the recesses, said locking members having keyreceiving openings accessible from the inner face of the rim for the rotation of the looking members into or out of engagement with the locking notches.

In testimony whereof I afiix my signature. 1 ZENO LITTMAN. 

